Rick Scott ad: Obama backs Crist. Next Scott ad: water is wet

Maybe voters forgot that, in 2010, Republican Marco Rubio used it against Crist in a Senate primary.

Maybe voters forgot that, in 2012, Crist appeared on stage at the Democratic National Convention and advocated for Obama's reelection. And maybe they forgot, too, that Crist campaigned for Obama all over Florida.

Maybe voters forgot that, at the end of 2012, Crist tweeted out a photograph of himself and his wife at a White House event to mark his official decision to become a Democrat.